EP 0530371 B1 19970115 - TRANSITION METAL-SPIROBENZOPYRAN COMPLEX, PRODUCTION THEREOF, AND PHOTOCHROMIC MATERIAL COMPRISING THE SAME
Title (en)
TRANSITION METAL-SPIROBENZOPYRAN COMPLEX, PRODUCTION THEREOF, AND PHOTOCHROMIC MATERIAL COMPRISING THE SAME
Title (de)
UEBERGANGSMETALL-SPIROBENZOPYRANKOMPLEX, DEREN HERSTELLUNG UND DIESE ENTHALTENDE PHOTOCHROMISCHE MATERIALE
Title (fr)
COMPLEXE SPIROBENZOPYRANNE-METAL DE TRANSITION, PRODUCTION DE CE COMPLEXE ET MATERIAU PHOTOCHROMIQUE CONTENANT CE COMPLEXE
Publication
Application
Priority
- JP 4720291 A 19910313
- JP 9200295 W 19920312
Abstract (en)
[origin: WO9216538A1] A novel compound exhibiting stable photochromism, i.e., a transition metal-spirobenzothiopyran complex represented by general formula (I) and a process for producing the same, wherein R?1 represents C1? to C20? alkyl; R?2, R?3, R?4, R?5, R?6, R?7 and R?8 represent each hydrogen, etc.; Y represents oxygen or sulfur; and M represents chromium, etc.
IPC 1-7
IPC 8 full level
C07F 11/00 (2006.01); C09K 9/02 (2006.01)
CPC (source: EP US)
C07F 11/00 (2013.01 - EP US); C09K 9/02 (2013.01 - EP US); Y10S 430/163 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9216538 A1 19921001; DE 69216722 D1 19970227; DE 69216722 T2 19970814; EP 0530371 A1 19930310; EP 0530371 A4 19931006; EP 0530371 B1 19970115; JP 3200649 B2 20010820; JP H04283595 A 19921008; US 5288592 A 19940222
DOCDB simple family (application)
JP 9200295 W 19920312; DE 69216722 T 19920312; EP 92906715 A 19920312; JP 4720291 A 19910313; US 93804492 A 19921112